Restrict Specific Custom Fields from Being Copied
SuiteProjects Pro lets users clone, duplicate, repeat, copy projects, expenses, resources, timesheets, and workspaces. It may bot always be appropriate to copy some information stored in custom fields, as duplicate information on receipts, charges, bookings, billing rules, and tasks could create problems. You can prevent the information stored in these custom fields from being copied across by checking the Never clone, repeat, duplicate or copy this field box on the custom field properties form.
To enable this feature, contact SuiteProjects Pro Support.